Laptop unable to use BitLocker on drive with VSS service session tampering

4.5

The active VSS session is being hijacked or terminated by another process.

Symptoms
  • BitLocker error
  • Session timeout
  • System lag
Possible Causes
  • Third-party backup tools
  • Malware

Step-by-Step Fix

1

Disable Other Backup Apps

Ensure only BitLocker is using VSS.

2

Check for Malware

Some viruses kill VSS sessions to stop backups.

3

Restart VSS Service

Clear the stuck session.

When to See a Technician

Only one "coordinator" session should be active at a time for a volume.

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